package main

import "fmt"

type ol struct {
	name string
}

func (o *ol) set(str string)  {
	o.name = str
}

func nset(o *ol)  {
	o.name = "11"
}

func main() {

	var o = ol{}
	fmt.Println(o.name)
	//o.set("aa")
	nset(&o)
	fmt.Println(o.name)
}
